<?php // $Id: edit_index.class.php,v 1.8.2.1 2008/12/26 23:19:47 arborrow Exp $

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards Martin Dougiamas		http://dougiamas.com  //
//		   (C) 2001-3001 Eloy Lafuente (stronk7) http://contiento.com  //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

/// This class will provide the interface for all the edit index actions

class edit_index extends XMLDBAction {

	/**
	 * Init method, every subclass will have its own
	 */
	function init() {
		parent::init();

	/// Set own custom attributes

	/// Get needed strings
		$this->loadStrings(array(
			'change' => 'xmldb',
			'vieworiginal' => 'xmldb',
			'viewedited' => 'xmldb',
			'yes' => '',
			'no' => '',
			'back' => 'xmldb'
		));
	}

	/**
	 * Invoke method, every class will have its own
	 * returns true/false on completion, setting both
	 * errormsg and output as necessary
	 */
	function invoke() {
		parent::invoke();

		$result = true;

	/// Set own core attributes
		$this->does_generate = ACTION_GENERATE_HTML;

	/// These are always here
		global $CFG, $XMLDB;

	/// Do the job, setting result as needed
	/// Get the dir containing the file
		$dirpath = required_param('dir', PARAM_PATH);
		$dirpath = $CFG->dirroot . stripslashes_safe($dirpath);

	/// Get the correct dirs
		if (!empty($XMLDB->dbdirs)) {
			$dbdir =& $XMLDB->dbdirs[$dirpath];
		} else {
			return false;
		}
		if (!empty($XMLDB->editeddirs)) {
			$editeddir =& $XMLDB->editeddirs[$dirpath];
			$structure =& $editeddir->xml_file->getStructure();
		}

	/// ADD YOUR CODE HERE

	/// Fetch request data
		$tableparam = required_param('table', PARAM_CLEAN);
		if (!$table =& $structure->getTable($tableparam)) {
			$this->errormsg = 'Wrong table specified: ' . $tableparam;
			return false;
		}
		$indexparam = required_param('index', PARAM_CLEAN);
		if (!$index =& $table->getIndex($indexparam)) {
		/// Arriving here from a name change, looking for the new key name
			$indexparam = required_param('name', PARAM_CLEAN);
			$index =& $table->getIndex($indexparam);
		}

		$dbdir =& $XMLDB->dbdirs[$dirpath];
		$origstructure =& $dbdir->xml_file->getStructure();

	/// Add the main form
		$o = '<form id="form" action="index.php" method="post">';
		$o.= '<div>';
		$o.= '	<input type="hidden" name ="dir" value="' . str_replace($CFG->dirroot, '', $dirpath) . '" />';
		$o.= '	<input type="hidden" name ="table" value="' . $tableparam .'" />';
		$o.= '	<input type="hidden" name ="index" value="' . $indexparam .'" />';
		$o.= '	<input type="hidden" name ="action" value="edit_index_save" />';
		$o.= '	<input type="hidden" name ="postaction" value="edit_table" />';
		$o.= '	<table id="formelements" class="boxaligncenter">';
	/// XMLDB index name
	/// If the index has dependencies, we cannot change its name
		$disabled = '';
		if ($structure->getIndexUses($table->getName(), $index->getName())) {
			$disabled = ' disabled="disabled " ';
		}
		$o.= '	  <tr valign="top"><td><label for="name" accesskey="n">Name:</label></td><td colspan="2"><input name="name" type="text" size="30" id="name"' . $disabled . ' value="' . s($index->getName()) . '" /></td></tr>';
	/// XMLDB key comment
		$o.= '	  <tr valign="top"><td><label for="comment" accesskey="c">Comment:</label></td><td colspan="2"><textarea name="comment" rows="3" cols="80" id="comment">' . s($index->getComment()) . '</textarea></td></tr>';
	/// XMLDBIndex Type
		$typeoptions = array (0 => 'not unique',
							  1 => 'unique');
		$o.= '	  <tr valign="top"><td><label for="menuunique" accesskey="t">Type:</label></td>';
		$o.= '		<td colspan="2">' . choose_from_menu($typeoptions, 'unique', $index->getUnique(), '', '', '', true) . '</td></tr>';
	/// XMLDBIndex Fields
		$o.= '	  <tr valign="top"><td><label for="fields" accesskey="f">Fields:</label></td>';
		$o.= '		<td colspan="2"><input name="fields" type="text" size="40" maxlength="80" id="fields" value="' . s(implode(', ', $index->getFields())) . '" /></td></tr>';
	/// Change button
		$o.= '	  <tr valign="top"><td>&nbsp;</td><td colspan="2"><input type="submit" value="' .$this->str['change'] . '" /></td></tr>';
		$o.= '	</table>';
		$o.= '</div></form>';
	/// Calculate the buttons
		$b = ' <p class="centerpara buttons">';
	/// The view original XML button
		if ($table->getIndex($indexparam)) {
			$b .= '&nbsp;<a href="index.php?action=view_index_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;select=original&amp;table=' . $tableparam . '&amp;index=' . $indexparam . '">[' . $this->str['vieworiginal'] . ']</a>';
		} else {
			$b .= '&nbsp;[' . $this->str['vieworiginal'] . ']';
		}
	/// The view edited XML button
		if ($index->hasChanged()) {
			$b .= '&nbsp;<a href="index.php?action=view_index_xml&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '&amp;select=edited&amp;table=' . $tableparam . '&amp;index=' . $indexparam . '">[' . $this->str['viewedited'] . ']</a>';
		} else {
			$b .= '&nbsp;[' . $this->str['viewedited'] . ']';
		}
	/// The back to edit table button
		$b .= '&nbsp;<a href="index.php?action=edit_table&amp;table=' . $tableparam . '&amp;dir=' . urlencode(str_replace($CFG->dirroot, '', $dirpath)) . '">[' . $this->str['back'] . ']</a>';
		$b .= '</p>';
		$o .= $b;

		$this->output = $o;

	/// Launch postaction if exists (leave this here!)
		if ($this->getPostAction() && $result) {
			return $this->launch($this->getPostAction());
		}

	/// Return ok if arrived here
		return $result;
	}
}
?>
